Asthma is a major health problem in the United States, as declared by the National Institutes of Health (NIH).
22 Million Americans have asthma.
Nearly 1.8 million emergency room visits a year are the result of asthma flare-ups.
Asthma has caused more than 10 million missed workdays a year.
Among chronic diseases, asthma is a major cause of missed school days for children 5 to 17 years old.
The cost of asthma is estimated to be at least $19 billion a year.
This information has been provided by Allergy and Asthma Foundation of America and Merck & Co., Inc.